The cytology of Brachycome line ariloba |
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| Authors: | K Watanabe C R Carter S Smith-White |
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| Institution: | (1) School of Biological Sciences, University of Sydney, 2006 Sydney, N.S.W., Australia;(2) Present address: Biological Institute, Faculty of General Education, Kobe University, 657 Kobe, Japan |
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| Abstract: | Hybrids between B. campylocarpa (2n=8) and B. lineariloba Race A (2n=4) have been made and studied in both meiosis and mitosis. In B. campylocarpa A × B. lineariloba A3, meiotic pairing is limited, and suggests that there are segmental homologies between the two lineariloba chromosomes and three of the four campylocarpa chromosomes. The chromosomal relationship between the two species is not close. In hybrids there is a marked difference or asynchrony in the condensation patterns of the chromosomes from the two parental sources. Condensation behaviour is not determined by the genome and must be under local control within each chromosome. |
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